Pith Number

pith:D3P6KNF7

pith:2020:D3P6KNF7GW2TDQQGRMCV2OTFX7

not attested not anchored not stored refs pending

Quantum Advantage in Information Retrieval

Mark Howard, Pierre-Emmanuel Emeriau, Shane Mansfield

arxiv:2007.15643 v2 · 2020-07-30 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D3P6KNF7GW2TDQQGRMCV2OTFX7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T04:40:06.141828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1edfe534bf35b531c2068b055d3a65bffa4b3d1f80d13884f9c672d38805e6cd

Aliases

arxiv: 2007.15643 · arxiv_version: 2007.15643v2 · doi: 10.48550/arxiv.2007.15643 · pith_short_12: D3P6KNF7GW2T · pith_short_16: D3P6KNF7GW2TDQQG · pith_short_8: D3P6KNF7

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/D3P6KNF7GW2TDQQGRMCV2OTFX7 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1edfe534bf35b531c2068b055d3a65bffa4b3d1f80d13884f9c672d38805e6cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffdcdb33a7fc63178937a4ed656f6747e7a2c7e4a90105a98e772dcce54ed1d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-07-30T17:57:46Z",
    "title_canon_sha256": "a8b4724a44d8d0da0e09714ad366dab3d64e31807748c1e64e1e920359b77ddb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.15643",
    "kind": "arxiv",
    "version": 2
  }
}